<template>
  <div class="app-container">

   
    <h2 style="text-align: center;">发布新课程</h2>

    <el-steps :active="3" process-status="wait" align-center style="margin-bottom: 40px;">
      <el-step title="填写课程基本信息"/>

      <el-step title="创建课程大纲"/>
      <el-step title="发布课程"/>
    </el-steps>
    <div class="ccInfo">
      <img :src="coursePublish.cover">
      <div class="main">
        <h2>{{ coursePublish.title }}</h2>
        <p class="gray"><span>共{{ coursePublish.lessonNum }}课时</span></p>
        <p><span>所属分类：{{ coursePublish.subjectLevelOne }} — {{ coursePublish.subjectLevelTwo }}</span></p>
        <p>课程讲师：{{ coursePublish.teacherName }}</p>
        <h3 class="red">￥{{ coursePublish.price }}</h3>
      </div>
    </div>

    <div>
      <el-button @click="previous">返回修改</el-button>
      <el-button :disabled="saveBtnDisabled" type="primary" @click="publish">发布课程</el-button>
    </div>
  </div>
</template>
<script>
    import courseApi from '@/api/edu/course';

    export default {
        
        data(){
            return {
                saveBtnDisabled:false,
                courseId:'', // 课程id
                coursePublish:{} // 接受课程信息对象
            }
        },
        created(){

            // 获取路由中的课程id 赋值给当前courseId
            if(this.$route.params && this.$route.params.id){
                this.courseId=this.$route.params.id;
            }
            // 在页面加载前调用
            this.initCoursePublishInfo();
        },  
        methods:{
            // 返回上一步
            previous(){
                this.$router.push({path:'/course/chapter/'+this.courseId});
            },

            // 发布课程跳转到 课程列表页面
            publish(){
              
              this.$confirm('请核实课程信息无误后在发布, 是否继续?', '提示', {
              confirmButtonText: '确定', // then
              cancelButtonText: '取消', // catch
              type: 'warning'
             })
            .then(() => {
                // 调用方法
                this.publishCourse();

               // 跳转到 课程列表页面
                this.$router.push({path:'/course/list'});
                })
            .catch(() => {
              this.$message({
                type: 'info',
                message: '已取消删除'
              });          
            });

                
            },
            // 发布课程，
            publishCourse(){
              courseApi.publishCourseById(this.courseId)
                .then(response =>{
                     // 提示添加成功
                  this.$message({
                    type:'success',
                    message:'发布课程成功'
                  });
                })
            },

            // 初始化 课程发布信息，根据课程id
            initCoursePublishInfo(){
              courseApi.getCoursePublish(this.courseId)
                .then(response =>{
                    this.coursePublish = response.data.courseFinal;
                });
            }
        }
    }
</script>

<style scoped>
.ccInfo {
    background: #f5f5f5;
    padding: 20px;
    overflow: hidden;
    border: 1px dashed #DDD;
    margin-bottom: 40px;
    position: relative;
}
.ccInfo img {
    background: #d6d6d6;
    width: 500px;
    height: 278px;
    display: block;
    float: left;
    border: none;
}
.ccInfo .main {
    margin-left: 520px;
}

.ccInfo .main h2 {
    font-size: 28px;
    margin-bottom: 30px;
    line-height: 1;
    font-weight: normal;
}
.ccInfo .main p {
    margin-bottom: 10px;
    word-wrap: break-word;
    line-height: 24px;
    max-height: 48px;
    overflow: hidden;
}

.ccInfo .main p {
    margin-bottom: 10px;
    word-wrap: break-word;
    line-height: 24px;
    max-height: 48px;
    overflow: hidden;
}
.ccInfo .main h3 {
    left: 540px;
    bottom: 20px;
    line-height: 1;
    font-size: 28px;
    color: #d32f24;
    font-weight: normal;
    position: absolute;
}
</style>